Granted Patent
Utility
US 5,994,432 · App. 07/727,539
Storage-stable/clear solutions of poly(imideamides)
Inventor:
Philippe Michaud
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Jul 9, 1991
Inventor
Philippe Michaud
Assignee (at issue)
Ciba Specialty Chemicals Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.